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Q. What do you know about Radioactive Dating? Ans. Half-life measurements of radioactive elements in rocks and fossils can be used to determine the age of the specimen. On
AT 25 DEGREES CELCIUS,THE MOLAR IONIC CONDUCTIVITIES OF CALCIUM IONS,MAGNESIUM IONS AND ZINC IONS 3.87,5.01 AND 7.35 MILISECONDS SQUARE METRE PER MOLE RESPECTIVELY.CALCULATE THEIR
What is Frenkel defect A pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure. Such a pair of vacant sites is called Schottky
example of two component with different composition
When an electron jumps from lower to higher orbit, its energy : (1) Increases (2) Decreases (3) Remains the same (4) None of these Ans: Increases
Calculate the force constant of CF4 and SiF4 and compare their relative strengths with each other. The heats of formation of CF 4 and SiF 4 are -1222 kJmol -1 and -1615
why pcl3 and s2cl2 are less polar then sicl4
Q. Structure of Covalent Bonds? Ans. A covalent bond forms between elements that are near each other in the periodic table While an ionic bond involves an exchange of e
Wet test for basic radicals
why is filtration in soil and water a slow process and explain the colour change in the filtrate
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